runge
19 years ago
parent
ac01f36ce0
commit
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EXTRA_DIST=README blockdpy.c dtVncPopup rx11vnc rx11vnc.pl shm_clear slide.pl vcinject.pl x11vnc_loop
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In this directory you'll find a hodgepodge of wrapper scripts and
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utility programs that have found some use with x11vnc.
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Some are on the rough side and will need some customization for your
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use. Many of them are described on the webpage:
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http://www.karlrunge.com/x11vnc
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(use your browser's Find action to find them!). Some of them also have
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documentation near the top of the file.
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x11vnc -accept scripts:
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blockdpy.c try to lock screen if local person knocks monitor out of DPMS
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dtVncPopup CDE/dtksh by Stefan Radman to accept connections, lock screen
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x11vnc launch wrappers:
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rx11vnc simple ssh/rsh x11vnc launcher. -S option needs work...
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rx11vnc.pl perl script tries to do rx11vnc -S tunnelling better.
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x11vnc -pipeinput/-rawfb utilities:
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vcinject.pl perl script like LinuxVNC.c, for x11vnc viewing of linux console
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slide.pl amusing example using x11vnc -rawfb for jpeg slideshow.
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Misc. scripts:
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shm_clear list or remove orphaned shm slots from hard x11vnc crashes.
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x11vnc_loop kludge to run in bg attaching x11vnc to X login. Better to
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use Xsetup mechanism.
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/*
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* blockdpy.c
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*
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* Copyright (c) 2004 Karl J. Runge <runge@karlrunge.com>
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* All rights reserved.
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*
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* This is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This software is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this software; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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* USA.
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*
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*-----------------------------------------------------------------------
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*
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* This tool is intended for use with x11vnc. It is a kludge to try to
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* "block" access via the physical display while x11vnc is running.
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*
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* The expected application is that of a user who screen-locks his
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* workstation before leaving and then later unlocks it remotely via
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* x11vnc. The user is concerned people with physical access to the
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* machine will be watching, etc.
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*
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* Of course if people have physical access to the machine there are
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* much larger potential security problems, but the idea here is to put
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* up a larger barrier than simply turning on the monitor and tapping
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* the mouse (i.e. to wake up the monitor from DPMS and then observe
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* the x11vnc activity).
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*
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* This program requires DPMS support in the video card and monitor,
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* and the DPMS extension in the X server and the corresponding
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* library with the DPMS API (libXext).
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*
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* It starts off by forcing the state to be DPMSModeOff (lowest power).
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* Then it periodically (a few times a second) checks if the system is
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* still in that state. If it discovers it to be in another state, it
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* immediately runs, as a separate command, a screen-lock program, "xlock"
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* by default. The environment variable XLOCK_CMD or -lock option can
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* override this default. "xscreensaver-command" might be another choice.
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*
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* It is up to the user to make sure the screen-lock command works
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* and PATH is set up correctly, etc. The command can do anything,
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* it doesn't have to lock the screen. It could make the sound of a
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* dog barking, for example :-)
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*
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* The option '-grab' causes the program to additionally call
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* XGrabServer() to try to prevent physical mouse or keyboard input to get
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* to any applications on the screen. NOTE: do NOT use, not working yet!
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* Freezes everything.
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*
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* The options: -display and -auth can be used to set the DISPLAY and
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* XAUTHORITY environment variables via the command line.
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*
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* The options -standby and -suspend change the desired DPMS level
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* to be DPMSModeStandby and DPMSModeSuspend, respectively.
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*
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* The option '-f flagfile' indicates a flag file to watch for to cause
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* the program to clean up and exit once it exists. No screen locking is
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* done when the file appears: it is an 'all clear' flag. Presumably the
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* x11vnc user has relocked the screen before the flagfile is created.
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* See below for coupling this behavior with the -gone command.
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*
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* The option '-bg' causes the program to fork into the background and
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* return 0 if everything looks ok. If there was an error up to that
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* point the return value would be 1.
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*
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* Option '-v' prints more info out, useful for testing and debugging.
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*
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*
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* These options allow this sort of x11vnc usage:
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*
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* x11vnc ... -accept "blockdpy -bg -f $HOME/.bdpy" -gone "touch $HOME/.bdpy"
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*
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* (this may also work for gone: -gone "killall blockdpy")
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*
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* In the above, once a client connects this program starts up in the
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* background and monitors the DPMS level. When the client disconnects
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* (he relocked the screen before doing so) the flag file is created and
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* so this program exits normally. On the other hand, if the physical
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* mouse or keyboard was used during the session, this program would
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* have locked the screen as soon as it noticed the DPMS change.
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*
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* One could create shell scripts for -accept and -gone that do much
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* more sophisticated things. This would be needed if more than one
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* client connects at a time.
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*
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* It is important to remember once this program locks the screen
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* it *exits*, so nothing will be watching the screen at that point.
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* Don't immediately unlock the screen from in x11vnc!! Best to think
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* about what might have happened, disconnect the VNC viewer, and then
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* restart x11vnc (thereby having this monitoring program started again).
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*
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*
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* To compile on Linux or Solaris:
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cc -o blockdpy blockdpy.c -L /usr/X11R6/lib -L /usr/openwin/lib -lX11 -lXext
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* (may also need -I /usr/.../include on older machines).
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*
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*/
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#include <stdio.h>
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#include <sys/time.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#include <signal.h>
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#include <X11/Xlib.h>
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#include <X11/Xproto.h>
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#include <X11/extensions/dpms.h>
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Display *dpy = NULL;
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CARD16 standby, suspend, off;
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int grab = 0;
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int verbose = 0;
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int bg = 0;
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/* for sleeping some number of millisecs */
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struct timeval _mysleep;
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#define msleep(x) \
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_mysleep.tv_sec = ((x)*1000) / 1000000; \
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_mysleep.tv_usec = ((x)*1000) % 1000000; \
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select(0, NULL, NULL, NULL, &_mysleep);
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/* called on signal or if DPMS changed, or other problem */
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void reset(int sig) {
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if (grab) {
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if (verbose) {
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fprintf(stderr, "calling XUngrabServer()\n");
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}
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XUngrabServer(dpy);
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}
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if (verbose) {
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fprintf(stderr, "resetting original DPMS values.\n");
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}
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fprintf(stderr, "blockdpy: reset sig=%d called\n", sig);
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DPMSEnable(dpy);
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DPMSSetTimeouts(dpy, standby, suspend, off);
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XFlush(dpy);
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if (sig) {
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XCloseDisplay(dpy);
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exit(0);
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}
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}
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int main(int argc, char** argv) {
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int verbose = 0, bg = 0;
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int i, ev, er;
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char *lock_cmd = "xlock";
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char *flag_file = NULL;
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char estr[100], cmd[500];
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struct stat sbuf;
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CARD16 power;
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CARD16 desired = DPMSModeOff;
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BOOL state;
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/* setup the lock command. it may be reset by -lock below. */
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if (getenv("XLOCK_CMD")) {
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lock_cmd = (char *) getenv("XLOCK_CMD");
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}
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/* process cmd line: */
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for (i=1; i<argc; i++) {
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if (!strcmp(argv[i], "-display")) {
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sprintf(estr, "DISPLAY=%s", argv[++i]);
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putenv(strdup(estr));
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} else if (!strcmp(argv[i], "-auth")) {
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sprintf(estr, "XAUTHORITY=%s", argv[++i]);
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putenv(strdup(estr));
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} else if (!strcmp(argv[i], "-lock")) {
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lock_cmd = argv[++i];
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} else if (!strcmp(argv[i], "-f")) {
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flag_file = argv[++i];
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unlink(flag_file);
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} else if (!strcmp(argv[i], "-grab")) {
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grab = 1;
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} else if (!strcmp(argv[i], "-bg")) {
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bg = 1;
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} else if (!strcmp(argv[i], "-v")) {
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verbose = 1;
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} else if (!strcmp(argv[i], "-standby")) {
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desired = DPMSModeStandby;
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} else if (!strcmp(argv[i], "-suspend")) {
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desired = DPMSModeSuspend;
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} else if (!strcmp(argv[i], "-off")) {
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desired = DPMSModeOff;
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}
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}
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/* we want it to go into background to avoid blocking, so add '&'. */
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strcpy(cmd, lock_cmd);
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strcat(cmd, " &");
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lock_cmd = cmd;
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/* close any file descriptors we may have inherited (e.g. port 5900) */
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for (i=3; i<=100; i++) {
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close(i);
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}
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/* open DISPLAY */
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dpy = XOpenDisplay(NULL);
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if (! dpy) {
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fprintf(stderr, "XOpenDisplay failed.\n");
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exit(1);
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}
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/* check for DPMS extension */
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if (! DPMSQueryExtension(dpy, &ev, &er)) {
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fprintf(stderr, "DPMSQueryExtension failed.\n");
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exit(1);
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}
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if (! DPMSCapable(dpy)) {
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fprintf(stderr, "DPMSCapable failed.\n");
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exit(1);
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}
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/* make sure DPMS is enabled */
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if (! DPMSEnable(dpy)) {
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fprintf(stderr, "DPMSEnable failed.\n");
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exit(1);
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}
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/* retrieve the timeouts for later resetting */
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if (! DPMSGetTimeouts(dpy, &standby, &suspend, &off)) {
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fprintf(stderr, "DPMSGetTimeouts failed.\n");
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exit(1);
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}
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if (! standby || ! suspend || ! off) {
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/* if none, set to some reasonable values */
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standby = 900;
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suspend = 1200;
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off = 1800;
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}
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if (verbose) {
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fprintf(stderr, "DPMS timeouts: %d %d %d\n", standby,
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suspend, off);
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}
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/* now set them to very small values */
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if (desired == DPMSModeOff) {
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if (! DPMSSetTimeouts(dpy, 1, 1, 1)) {
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fprintf(stderr, "DPMSSetTimeouts failed.\n");
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exit(1);
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}
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} else if (desired == DPMSModeSuspend) {
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if (! DPMSSetTimeouts(dpy, 1, 1, 0)) {
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fprintf(stderr, "DPMSSetTimeouts failed.\n");
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exit(1);
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}
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} else if (desired == DPMSModeStandby) {
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if (! DPMSSetTimeouts(dpy, 1, 0, 0)) {
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fprintf(stderr, "DPMSSetTimeouts failed.\n");
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exit(1);
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}
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}
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XFlush(dpy);
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/* set handlers for clean up in case we terminate via signal */
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signal(SIGHUP, reset);
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signal(SIGINT, reset);
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signal(SIGQUIT, reset);
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signal(SIGABRT, reset);
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signal(SIGTERM, reset);
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/* force state into DPMS Off (lowest power) mode */
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if (! DPMSForceLevel(dpy, desired)) {
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fprintf(stderr, "DPMSForceLevel failed.\n");
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exit(1);
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}
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XFlush(dpy);
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/* read state */
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msleep(500);
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if (! DPMSInfo(dpy, &power, &state)) {
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fprintf(stderr, "DPMSInfo failed.\n");
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exit(1);
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}
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fprintf(stderr, "power: %d state: %d\n", power, state);
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/* grab display if desired. NOT WORKING */
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if (grab) {
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if (verbose) {
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fprintf(stderr, "calling XGrabServer()\n");
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}
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XGrabServer(dpy);
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}
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/* go into background if desired. */
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if (bg) {
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pid_t p;
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if ((p = fork()) != 0) {
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if (p < 0) {
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fprintf(stderr, "problem forking.\n");
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exit(1);
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} else {
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/* XXX no fd closing */
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exit(0);
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}
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}
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}
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/* main loop: */
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while (1) {
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/* reassert DPMSModeOff (desired) */
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if (verbose) fprintf(stderr, "reasserting desired DPMSMode\n");
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DPMSForceLevel(dpy, desired);
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XFlush(dpy);
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/* wait a bit */
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msleep(200);
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/* check for flag file appearence */
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if (flag_file && stat(flag_file, &sbuf) == 0) {
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if (verbose) {
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fprintf(stderr, "flag found: %s\n", flag_file);
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}
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unlink(flag_file);
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reset(0);
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exit(0);
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}
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/* check state and power level */
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if (! DPMSInfo(dpy, &power, &state)) {
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fprintf(stderr, "DPMSInfo failed.\n");
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reset(0);
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exit(1);
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}
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if (verbose) {
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fprintf(stderr, "power: %d state: %d\n", power, state);
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}
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if (!state || power != desired) {
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/* Someone (or maybe a cat) is evidently watching... */
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fprintf(stderr, "DPMS CHANGE: power: %d state: %d\n",
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power, state);
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break;
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}
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}
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reset(0);
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fprintf(stderr, "locking screen with command: \"%s\"\n", lock_cmd);
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system(lock_cmd);
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exit(0);
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}
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@ -0,0 +1,109 @@
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#!/usr/dt/bin/dtksh
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#
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# accept dialog script for x11vnc
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# 2004-07-13 stefan.radman@ctbto.org
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# should work in any CDE environment (Sun,HP,IBM,...)
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#
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# when called without parameters shows a CDE question dialog:
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# Do you want to accept a VNC connection
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# from IP address $RFB_CLIENT_IP to your desktop?
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# Note:
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# After 30 seconds the screen will
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# be locked and the connection will be
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# accepted automatically."
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# [Yes} {__No__] [View/Only]
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# and counts down a timer in the dialog title bar
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# when the timer is down to 0, it locks the display and returns 0
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# (if the screenlock was successful or if the login prompt was active)
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#
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# buttons=retcode:
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# Yes = 0
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# No = 1 (same as closing the dialog windows)
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# View/Only = 3
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#
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# usage: x11vnc -forever -shared -accept "yes:0,no:*,view:3 dtVncPopup" -gone "dtVncPopup lock"
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#
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# security considerations: when you return to your console and unlock the display
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# you can never know if enyone else is connected to your display
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#
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# timeout until accept
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timeout=30
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# dialog message
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test -z "${RFB_CLIENT_IP}" && unknown="an unknown " || ip="$RFB_CLIENT_IP "
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message="\
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Do you want to accept a VNC connection
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from ${unknown}IP address ${ip}to your desktop?
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Note:
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After $timeout seconds the screen will
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be locked and the connection will be
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accepted automatically."
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# action functions
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accept () {
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exit 0
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}
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reject () {
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exit 1
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}
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view () {
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exit 3
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}
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lock () {
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# lock only if dtsession active
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xrdb -query | grep -c '^dtsession*' || accept
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# accept only if lock succeeds
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/usr/dt/bin/dtaction LockDisplay && accept || reject
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}
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# main
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# actions can be called directly
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test $# -gt 0 && $@
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# initialize the display
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XtInitialize TOPLEVEL vncPopup VncPopup "$0" "$@"
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# create a message dialog containing the contents of the specified file
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XmCreateQuestionDialog DIALOG $TOPLEVEL dialog \
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dialogTitle:"$DTKSH_APPNAME" \
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messageString:"$message" \
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unmapCallback:reject \
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# symbolPixmap:/usr/dt/appconfig/icons/C/DtFlag.m.pm
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# change the OK button to "Yes"
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XmMessageBoxGetChild OK_BUTTON $DIALOG DIALOG_OK_BUTTON
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XtSetValues $OK_BUTTON \
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labelString:"Yes" \
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activateCallback:accept
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# change the Cancel Button to "No"
|
||||
XmMessageBoxGetChild CANCEL_BUTTON $DIALOG DIALOG_CANCEL_BUTTON
|
||||
XtSetValues $CANCEL_BUTTON \
|
||||
labelString:"No" \
|
||||
activateCallback:reject
|
||||
|
||||
# change Help button to View-Only, set focus and make it the default
|
||||
XmMessageBoxGetChild HELP_BUTTON $DIALOG DIALOG_HELP_BUTTON
|
||||
XtSetValues $HELP_BUTTON \
|
||||
labelString:"View\nOnly" \
|
||||
activateCallback:view
|
||||
|
||||
# make "No" the default (for unmap as well)
|
||||
XtSetValues $DIALOG \
|
||||
defaultButton:$CANCEL_BUTTON initialFocus:$CANCEL_BUTTON \
|
||||
|
||||
# create the ticker
|
||||
ticker () {
|
||||
test $timeout -eq 0 && lock
|
||||
XtSetValues $DIALOG dialogTitle:"accepting in $timeout seconds"
|
||||
XtAddTimeOut TICKER 1000 ticker
|
||||
timeout=`expr $timeout - 1`
|
||||
}
|
||||
|
||||
# display dialog and activate ticker
|
||||
XtAddTimeOut TICKER 1000 ticker
|
||||
XtManageChild $DIALOG
|
||||
XtMainLoop
|
||||
|
||||
@ -0,0 +1,133 @@
|
||||
#!/bin/sh
|
||||
#
|
||||
# usage: rx11vnc [-s] <host>:<xdisplay>
|
||||
# rx11vnc [-s] <host> (assumes xdisplay is 0)
|
||||
#
|
||||
# -s means use ssh instead of rsh.
|
||||
# -S tries to tunnel the vnc traffic thru ssh. (experimental...)
|
||||
#
|
||||
#set -xv
|
||||
|
||||
#
|
||||
# Place your x11vnc cmd + options here (must have -bg and -display
|
||||
# with -display as the last one)
|
||||
#
|
||||
cmd="x11vnc -nap -q -bg -display"
|
||||
viewer="vncviewer"
|
||||
rsh=rsh
|
||||
|
||||
#
|
||||
# The following two settings are only used under -S (ssh tunnel)
|
||||
#
|
||||
# Unfortunately, we have to set up the ssh port redirection *before*
|
||||
# x11vnc has started and selected its listening port.
|
||||
# tunnel_ports is a list of ports we expect/hope to be free on both
|
||||
# the local and remote machines:
|
||||
#
|
||||
tunnel_ports="5900 5901 5902 5903"
|
||||
#
|
||||
# VNC has a poor default in that if the client appears to be emanating
|
||||
# from the local machine, then raw encoding is preferred. With ssh port
|
||||
# redirection we appear to be coming from the localhost, but we are not.
|
||||
# We pass this encoding list to the viewer to give lowest preference to
|
||||
# raw encoding:
|
||||
#
|
||||
tunnel_encodings="copyrect tight zrle hextile zlib corre rre"
|
||||
|
||||
if [ "$USER" = "runge" ]; then
|
||||
cmd="x11vnc.expt -nap -q -bg -rfbauth .vnc/passwd -display"
|
||||
viewer="vncviewerz"
|
||||
fi
|
||||
|
||||
if [ "X$1" = "X-s" ]; then
|
||||
shift
|
||||
rsh=ssh
|
||||
elif [ "X$1" = "X-S" ]; then
|
||||
shift
|
||||
rsh=ssh
|
||||
tunnel=1
|
||||
cmd=`echo "$cmd" | sed -e 's/ / -localhost /'`
|
||||
fi
|
||||
|
||||
remote=$1
|
||||
if echo "$remote" | grep ':' > /dev/null; then
|
||||
:
|
||||
else
|
||||
remote="$remote:0"
|
||||
fi
|
||||
|
||||
host=`echo "$remote" | awk -F: '{print $1}'`
|
||||
disp=`echo "$remote" | awk -F: '{print $2}'`
|
||||
disp=":$disp"
|
||||
if [ "X$host" = "X" ]; then
|
||||
echo "bad host."
|
||||
exit 1
|
||||
fi
|
||||
|
||||
# start the remote x11vnc:
|
||||
if [ $tunnel ]; then
|
||||
# much more kludgy for tunnelling:
|
||||
tmp=/tmp/rx11vnc.$$
|
||||
redir=""
|
||||
used_ports=`netstat -an | egrep '(ESTABLISHED|LISTEN) *$' \
|
||||
| sed -e 's/^[ ]*//' -e 's/^tcp[ 0-9][ 0-9]*//' \
|
||||
-e 's/[ ].*$//' -e 's/^.*[^0-9]//' | sort -nu`
|
||||
for p in $tunnel_ports
|
||||
do
|
||||
ok=1
|
||||
for u in $used_ports
|
||||
do
|
||||
if [ "X$p" = "X$u" ]; then
|
||||
echo "port $u is in use. skipping it"
|
||||
ok=
|
||||
break
|
||||
fi
|
||||
done
|
||||
if [ $ok ]; then
|
||||
redir="$redir -L $p:localhost:$p"
|
||||
fi
|
||||
done
|
||||
#
|
||||
# Have ssh put the command in the bg, then we look for PORT=
|
||||
# in the tmp file. The sleep at the end is to give us enough
|
||||
# time to connect thru the port redir, otherwise ssh will exit
|
||||
# before we can connect.
|
||||
#
|
||||
time=15
|
||||
$rsh -f $redir $host "$cmd $disp; echo END; sleep $time" > $tmp
|
||||
|
||||
i=0
|
||||
while [ $i -lt $time ]
|
||||
do
|
||||
sleep 1
|
||||
if grep '^PORT=' $tmp > /dev/null; then
|
||||
port=`grep '^PORT=' $tmp | sed -e 's/PORT=//'`
|
||||
if [ "X$port" != "X" ]; then
|
||||
break
|
||||
fi
|
||||
fi
|
||||
i=`expr $i + 1`
|
||||
done
|
||||
cat $tmp
|
||||
rm -f $tmp
|
||||
else
|
||||
port=`$rsh $host "$cmd $disp" | grep '^PORT=' | sed -e 's/PORT=//'`
|
||||
fi
|
||||
|
||||
echo "x11vnc port is '$port'"
|
||||
|
||||
# now start up the viewer on this end:
|
||||
if echo "$port" | grep '^[0-9][0-9]*$' > /dev/null; then
|
||||
if [ $port -lt 6000 -a $port -ge 5900 ]; then
|
||||
# vncviewer special cases 0-99
|
||||
port=`expr $port - 5900`
|
||||
fi
|
||||
if [ $tunnel ]; then
|
||||
$viewer -encodings "$tunnel_encodings" "localhost:$port"
|
||||
else
|
||||
$viewer "$host:$port"
|
||||
fi
|
||||
else
|
||||
echo "bad port."
|
||||
exit 1
|
||||
fi
|
||||
@ -0,0 +1,199 @@
|
||||
#!/bin/sh -- # A comment mentioning perl
|
||||
eval 'exec perl -S $0 ${1+"$@"}'
|
||||
if 0;
|
||||
#
|
||||
# Here is the remote x11vnc command.
|
||||
# Modify to your needs, required to have %DISP item that expands to X display
|
||||
# and the -bg option to go into the background.
|
||||
#
|
||||
$x11vnc_cmd = "x11vnc -localhost -nap -q -bg -display %DISP";
|
||||
|
||||
#
|
||||
# We will redir local ports to these remote ports hoping the remote
|
||||
# x11vnc selects one of them:
|
||||
#
|
||||
@tunnel_ports = qw(5900 5901 5902 5903 5904);
|
||||
|
||||
#
|
||||
# We need to specify the encoding preferences since vncviewer will
|
||||
# mistakeningly prefer "raw" encoding for local connection. required to
|
||||
# have %VNC_ITEM to expand to localhost:<port>
|
||||
|
||||
# One really needs an -encodings option otherwise the vncviewer will
|
||||
# prefer 'raw' which is very slow.
|
||||
#
|
||||
$viewer_cmd = "vncviewer -encodings 'copyrect tight zrle hextile zlib corre rre' %VNC_DISP";
|
||||
$sleep_time = 15;
|
||||
|
||||
if ($ENV{USER} eq 'runge') {
|
||||
# my personal kludges:
|
||||
$viewer_cmd =~ s/vncviewer/vncviewerz/; # for tight
|
||||
$x11vnc_cmd .= ' -rfbauth .vnc/passwd'; # I always want rfbauth
|
||||
}
|
||||
|
||||
chop($Program = `basename $0`);
|
||||
|
||||
$Usage = <<"END";
|
||||
|
||||
$Program: wrapper to tunnel vncviewer <-> x11vnc VNC traffic through a ssh
|
||||
encrypted tunnel port redirection.
|
||||
|
||||
Usage: $Program <options> <remote-Xdisplay>
|
||||
|
||||
Options:
|
||||
-l <user> ssh login as remote user <user>
|
||||
|
||||
-rfbauth <remote-auth-file> this option is passed to the remote
|
||||
x11vnc command for passwd file.
|
||||
|
||||
Notes:
|
||||
|
||||
Example: $Program snoopy:0
|
||||
|
||||
END
|
||||
|
||||
LOOP:
|
||||
while (@ARGV) {
|
||||
$_ = shift;
|
||||
CASE: {
|
||||
/^-display$/ && ($remote_xdisplay = shift, last CASE);
|
||||
/^-rfbauth$/ && ($x11vnc_cmd .= ' -rfbauth ' . shift, last CASE);
|
||||
/^-l$/ && ($remote_user = ' -l ' . shift, last CASE);
|
||||
/^--$/ && (last LOOP); # -- means end of switches
|
||||
/^-(-.*)$/ && (unshift(@ARGV, $1), last CASE);
|
||||
/^(-h|-help)$/ && ((print STDOUT $Usage), exit 0, last CASE);
|
||||
if ( /^-(..+)$/ ) { # split bundled switches:
|
||||
local($y, $x) = ($1, '');
|
||||
(unshift(@ARGV, $y), last CASE) if $y =~ /^-/;
|
||||
foreach $x (reverse(split(//, $y))) { unshift(@ARGV,"-$x") };
|
||||
last CASE;
|
||||
}
|
||||
/^-/ && ((print STDERR "Invalid arg: $_\n$Usage"), exit 1, last CASE);
|
||||
unshift(@ARGV,$_);
|
||||
last LOOP;
|
||||
}
|
||||
}
|
||||
|
||||
select(STDERR); $| = 1;
|
||||
select(STDOUT); $| = 1;
|
||||
|
||||
# Determine the remote X display to connect to:
|
||||
$remote_xdisplay = shift if $remote_xdisplay eq '';
|
||||
if ($remote_xdisplay !~ /:/) {
|
||||
$remote_xdisplay .= ':0'; # assume they mean :0 over there.
|
||||
}
|
||||
if ($remote_xdisplay =~ /:/) {
|
||||
$host = $`;
|
||||
$disp = ':' . $';
|
||||
} else {
|
||||
die "bad X display: $remote_xdisplay, must be <host>:<display>\n";
|
||||
}
|
||||
|
||||
#
|
||||
# Get list of local ports in use so we can avoid them:
|
||||
# (tested on Linux and Solaris)
|
||||
#
|
||||
open(NETSTAT, "netstat -an|") || die "netstat -an: $!";
|
||||
while (<NETSTAT>) {
|
||||
chomp ($line = $_);
|
||||
next unless $line =~ /(ESTABLISHED|LISTEN|WAIT2?)\s*$/;
|
||||
$line =~ s/^\s*//;
|
||||
$line =~ s/^tcp[\s\d]*//;
|
||||
$line =~ s/\s.*$//;
|
||||
$line =~ s/^.*\D//;
|
||||
if ($line !~ /^\d+$/) {
|
||||
die "bad netstat line: $line from $_";
|
||||
}
|
||||
$used_port{$line} = 1;
|
||||
}
|
||||
close(NETSTAT);
|
||||
|
||||
#
|
||||
# Now match up free local ports with the desired remote ports
|
||||
# (note that the remote ones could be in use but that won't stop
|
||||
# the ssh with port redirs from succeeding)
|
||||
#
|
||||
$lport = 5900;
|
||||
$cnt = 0;
|
||||
foreach $rport (@tunnel_ports) {
|
||||
while ($used_port{$lport}) {
|
||||
$lport++;
|
||||
$cnt++;
|
||||
die "too hard to find local ports 5900-$lport" if $cnt > 200;
|
||||
}
|
||||
$port_map{$rport} = $lport;
|
||||
$lport++;
|
||||
}
|
||||
|
||||
$redir = '';
|
||||
foreach $rport (@tunnel_ports) {
|
||||
$redir .= " -L $port_map{$rport}:localhost:$rport";
|
||||
}
|
||||
|
||||
#
|
||||
# Have ssh put the command in the bg, then we look for PORT= in the
|
||||
# tmp file. The sleep at the end is to give us enough time to connect
|
||||
# thru the port redir, otherwise ssh will exit before we can connect.
|
||||
#
|
||||
|
||||
# This is the x11vnc cmd for the remote side:
|
||||
$cmd = $x11vnc_cmd;
|
||||
$cmd =~ s/%DISP/$disp/;
|
||||
|
||||
# This is the ssh cmd for the local side (this machine):
|
||||
$ssh_cmd = "ssh -f $remote_user $redir $host '$cmd; echo END; sleep $sleep_time'";
|
||||
$ssh_cmd =~ s/ / /g;
|
||||
print STDERR "running ssh command:\n\n$ssh_cmd\n\n";
|
||||
|
||||
#
|
||||
# Run ssh and redir into a tmp file (assumes ssh will use /dev/tty
|
||||
# for password/passphrase dialog)
|
||||
#
|
||||
$tmp = "/tmp/rx.$$";
|
||||
system("$ssh_cmd > $tmp");
|
||||
|
||||
# Now watch for the PORT=XXXX message:
|
||||
$sleep = 0;
|
||||
$rport = '';
|
||||
print STDERR "\nWaiting for x11vnc to indicate its port ..";
|
||||
while ($sleep < $sleep_time + 10) {
|
||||
print STDERR ".";
|
||||
sleep(1);
|
||||
$sleep++;
|
||||
if (`cat $tmp` =~ /PORT=(\d+)/) {
|
||||
$rport = $1;
|
||||
# wait 1 more second for output:
|
||||
sleep(1);
|
||||
if (`cat $tmp` =~ /PORT=(\d+)/) {
|
||||
$rport = $1;
|
||||
}
|
||||
last;
|
||||
}
|
||||
}
|
||||
print STDERR "\n";
|
||||
|
||||
if (! $rport) {
|
||||
print STDERR `cat $tmp`;
|
||||
unlink($tmp);
|
||||
die "could not determine remote port.\n";
|
||||
}
|
||||
unlink($tmp);
|
||||
|
||||
# Find the remote to local mapping:
|
||||
$lport = $port_map{$rport};
|
||||
print STDERR "remote port is: $rport (corresponds to port $lport here)\n";
|
||||
if (! $lport) {
|
||||
die "could not determine local port redir.\n";
|
||||
}
|
||||
|
||||
# Apply the special casing vncviewer does for 5900 <= port < 6000
|
||||
if ($lport < 6000 && $lport >= 5900) {
|
||||
$lport = $lport - 5900;
|
||||
}
|
||||
|
||||
# Finally, run the viewer.
|
||||
$cmd = $viewer_cmd;
|
||||
$cmd =~ s/%VNC_DISP/localhost:$lport/;
|
||||
|
||||
print STDERR "running vncviewer command:\n\n$cmd\n\n";
|
||||
system($cmd);
|
||||
@ -0,0 +1,97 @@
|
||||
#!/bin/sh
|
||||
#
|
||||
# shm_clear: clean out unattached (NATTACH=0) shm segments.
|
||||
# See ipcs(1) and ipcrm(1). Tested on Linux and Solaris.
|
||||
#
|
||||
# Usage:
|
||||
# shm_clear list and prompt for removal of your unattached shm segments.
|
||||
# shm_clear -y assume "yes" to all the removal prompts.
|
||||
# shm_clear -l only list (all of) your shm segments and exit.
|
||||
#
|
||||
|
||||
#set -xv
|
||||
if echo "$1" | grep '^-h' > /dev/null; then
|
||||
# -h or -help
|
||||
tail +3 $0 | head -9
|
||||
exit
|
||||
fi
|
||||
|
||||
if [ "X$USER" = "X" ]; then
|
||||
USER=$LOGNAME
|
||||
fi
|
||||
l_arg="shmid.*owner|CREATOR|$USER"
|
||||
|
||||
# set up OS dependent cmdline opts, etc.
|
||||
if [ `uname` = "Linux" ]; then
|
||||
m_arg="-m"
|
||||
r_arg="shm"
|
||||
g_arg="^0x"
|
||||
s_cmd="ipcs $m_arg -i %ID"
|
||||
awkcut='{print $2, $6}'
|
||||
elif [ `uname` = "SunOS" ]; then
|
||||
m_arg="-ma"
|
||||
r_arg="-m"
|
||||
g_arg="^m"
|
||||
s_cmd="ipcs $m_arg | egrep ' %ID |CREATOR' | grep -v IPC.status"
|
||||
awkcut='{print $2, $9}'
|
||||
else
|
||||
echo unsupported OS: `uname`
|
||||
exit 1
|
||||
fi
|
||||
|
||||
list() {
|
||||
if [ "X$1" = "X-L" ]; then
|
||||
l_arg="$l_arg|."
|
||||
echo "All shm segments for all:"
|
||||
else
|
||||
echo "All shm segments for $USER:"
|
||||
fi
|
||||
ipcs $m_arg | egrep "$l_arg"
|
||||
echo
|
||||
}
|
||||
|
||||
show() {
|
||||
cmd=`echo "$s_cmd" | sed -e "s/%ID/$1/g"`
|
||||
eval $cmd
|
||||
}
|
||||
|
||||
remove() {
|
||||
echo ipcrm $r_arg $1
|
||||
ipcrm $r_arg $1
|
||||
}
|
||||
|
||||
if [ "X$1" = "X-l" -o "X$1" = "X-L" ]; then
|
||||
# list only. both attached and unattached listed.
|
||||
list $1
|
||||
exit 0
|
||||
fi
|
||||
|
||||
if [ "X$1" = "X-y" ]; then
|
||||
shift
|
||||
yes=1 # assume "yes" to all delete questions.
|
||||
else
|
||||
yes=""
|
||||
fi
|
||||
|
||||
list
|
||||
|
||||
ids=`ipcs $m_arg | grep "$g_arg" | grep $USER | awk "$awkcut" | grep ' 0$' | awk '{print $1}'`
|
||||
if [ "X$ids" = "X" ]; then
|
||||
echo "No unattached shmids for $USER."
|
||||
fi
|
||||
|
||||
for id in $ids
|
||||
do
|
||||
if [ $yes ]; then
|
||||
:
|
||||
else
|
||||
echo "-------------------------------------"
|
||||
show $id
|
||||
printf "\nDelete? [y]/n "
|
||||
read x
|
||||
if echo "$x" | grep -i n > /dev/null; then
|
||||
continue
|
||||
fi
|
||||
fi
|
||||
remove $id
|
||||
done
|
||||
@ -0,0 +1,112 @@
|
||||
#!/bin/sh -- # A comment mentioning perl
|
||||
eval 'exec perl -S $0 ${1+"$@"}'
|
||||
if 0;
|
||||
#
|
||||
# slide.pl: amusing example slideshow program for use with x11vnc -rawfb mode.
|
||||
#
|
||||
# E.g. x11vnc -rawfb map:/tmp/foo@640x480x32:ff/ff00/ff0000 -pipeinput slide.pl
|
||||
#
|
||||
# requires: jpegtopnm(1), (maybe LSB too).
|
||||
#
|
||||
|
||||
@jpegs = qw(
|
||||
dr_fun_new.jpg canon.jpg go_microsoft.jpg jonathan2.jpg
|
||||
michelle1.jpg novm.jpg photo-008.jpg presrange.jpg
|
||||
);
|
||||
|
||||
# Or:
|
||||
# @jpegs = @ARGV;
|
||||
# @jpegs = <*.jpg>;
|
||||
|
||||
# this is x11vnc's -rawfb value:
|
||||
if ($ENV{X11VNC_RAWFB_STR} =~ m,:(.*)@(\d+)x(\d+)x(\d+),) {
|
||||
$fb = $1; # filename
|
||||
$W = $2; # width
|
||||
$H = $3; # height
|
||||
} else {
|
||||
die "No usable X11VNC_RAWFB_STR\n";
|
||||
}
|
||||
|
||||
open(FB, ">$fb") || die "$!";
|
||||
|
||||
# make a solid background:
|
||||
$ones = "\377" x ($W * 4);
|
||||
$grey = "\340" x ($W * 4);
|
||||
for ($y = 0; $y < $H; $y++) {
|
||||
print FB $grey;
|
||||
}
|
||||
|
||||
# this is rather slow with many jpegs... oh well.
|
||||
foreach $pic (@jpegs) {
|
||||
print STDERR "loading '$pic' please wait ...\n";
|
||||
open(JPEG, "jpegtopnm '$pic' 2>/dev/null|") || die "$!";
|
||||
while (<JPEG>) {
|
||||
next if /^P\d/;
|
||||
if (/^(\d+)\s+(\d+)\s*$/) {
|
||||
$Jpeg{$pic}{w} = $1;
|
||||
$Jpeg{$pic}{h} = $2;
|
||||
}
|
||||
last if /^255$/;
|
||||
}
|
||||
$data = '';
|
||||
while (<JPEG>) {
|
||||
$data .= $_;
|
||||
}
|
||||
close(JPEG);
|
||||
|
||||
# need to put in a 4th 0 byte after RGB for 32bpp. 24bpp doesn't work.
|
||||
# (MSB might be other way around).
|
||||
|
||||
$new = '';
|
||||
for ($l = 0; $l < int(length($data)/3); $l++) {
|
||||
$new .= substr($data, $l * 3, 3) . "\0";
|
||||
}
|
||||
$Jpeg{$pic}{data} = $new;
|
||||
$data = ''; $new = '';
|
||||
|
||||
if ($pic eq $jpegs[0]) {
|
||||
showpic(0);
|
||||
}
|
||||
}
|
||||
|
||||
$N = scalar(@jpegs);
|
||||
print STDERR "\nFinished loading $N images. Click Button or Spacebar for next.\n";
|
||||
$I = 0;
|
||||
|
||||
while (<>) {
|
||||
# read the next user input event, watch for button press or spacebar:
|
||||
last if /^Keysym.* [qQ] /;
|
||||
next unless /^(Pointer.*ButtonPress|Keysym.*space.*KeyPress)/;
|
||||
$I = ($I + 1) % $N;
|
||||
showpic($I);
|
||||
}
|
||||
|
||||
sub showpic {
|
||||
my($i) = @_;
|
||||
|
||||
my $pic = $jpegs[$i];
|
||||
my $h = $Jpeg{$pic}{h};
|
||||
my $w = $Jpeg{$pic}{w};
|
||||
|
||||
my $dy = int(($H - $h)/2);
|
||||
my $dx = int(($W - $w)/2);
|
||||
|
||||
print STDERR "showing pic $i: $pic\t$w x $h +$dy+$dx\n";
|
||||
|
||||
# clear screen:
|
||||
seek(FB, 0, 0);
|
||||
for ($y = 0; $y < $H; $y++) {
|
||||
print FB $ones;
|
||||
}
|
||||
|
||||
# insert new picture:
|
||||
for ($y = 0; $y < $h; $y++) {
|
||||
seek(FB, (($y + $dy) * $W + $dx) * 4, 0);
|
||||
$line = substr($Jpeg{$pic}{data}, $y * $w * 4, $w * 4);
|
||||
print FB $line;
|
||||
}
|
||||
}
|
||||
|
||||
close(FB);
|
||||
#unlink($fb); # this (probably) won't kill x11vnc
|
||||
print STDERR "$0 done.\n";
|
||||
@ -0,0 +1,113 @@
|
||||
#!/bin/sh -- # A comment mentioning perl
|
||||
eval 'exec perl -S $0 ${1+"$@"}'
|
||||
if 0;
|
||||
#
|
||||
# vcinject.pl: simple hack to inject keystrokes into Linux VC tty.
|
||||
# See LinuxVNC.c for a more careful treatment using C and public API.
|
||||
#
|
||||
# Usage: vcinject.pl <N> (or /dev/ttyN)
|
||||
#
|
||||
# This is an example x11vnc -pipeinput program E.g.:
|
||||
#
|
||||
# x11vnc -rawfb map:/dev/fb0@1024x768x16 -pipeinput "vcinject.pl /dev/tty3"
|
||||
#
|
||||
# (see fbset(8) for obtaining fb info).
|
||||
#
|
||||
# It reads lines like this from STDIN:
|
||||
#
|
||||
# Keysym <id> <down> <n> <Keysym> ...
|
||||
#
|
||||
# <id> is ignored, it uses the rest to deduce the keystrokes to send
|
||||
# to the console.
|
||||
#
|
||||
|
||||
$tty = shift;
|
||||
$tty = "/dev/tty$tty" if $tty =~ /^\d+$/;
|
||||
|
||||
warn "strange tty device: $tty\n" if $tty !~ m,^/dev/tty\d+$,;
|
||||
|
||||
open(TTY, ">$tty") || die "open $tty: $!\n";
|
||||
$fd = fileno(TTY);
|
||||
|
||||
$linux_ioctl_syscall = 54; # common knowledge, eh? :-)
|
||||
$TIOCSTI = 0x5412;
|
||||
|
||||
%Map = qw(
|
||||
Escape 27
|
||||
Tab 9
|
||||
Return 13
|
||||
BackSpace 8
|
||||
Home 1
|
||||
End 5
|
||||
Up 16
|
||||
Down 14
|
||||
Right 6
|
||||
Left 2
|
||||
Next 6
|
||||
Prior 2
|
||||
);
|
||||
# the latter few above seem to be vi specials. (since they are normally
|
||||
# escape sequences, e.g. ESC [ 5 ~)
|
||||
|
||||
sub lookup {
|
||||
my($down, $key, $name) = @_;
|
||||
|
||||
my $n = -1;
|
||||
$name =~ s/^KP_//;
|
||||
|
||||
# algorithm borrowed from LinuxVNC.c:
|
||||
if (! $down) {
|
||||
if ($name =~ /^Control/) {
|
||||
$control--;
|
||||
}
|
||||
return $n;
|
||||
}
|
||||
|
||||
if ($name =~ /^Control/) {
|
||||
$control++;
|
||||
} else {
|
||||
if (exists($Map{$name})) {
|
||||
$n = $Map{$name};
|
||||
}
|
||||
if ($control && $name =~ /^[A-z]$/) {
|
||||
$n = ord($name);
|
||||
# shift down to the Control zone:
|
||||
if ($name =~ /[a-z]/) {
|
||||
$n -= (ord("a") - 1);
|
||||
} else {
|
||||
$n -= (ord("A") - 1);
|
||||
}
|
||||
}
|
||||
if ($n < 0 && $key < 256) {
|
||||
$n = $key;
|
||||
}
|
||||
}
|
||||
return $n;
|
||||
}
|
||||
|
||||
$control = 0;
|
||||
$debug = 0;
|
||||
|
||||
while (<>) {
|
||||
chomp;
|
||||
if (/^\w+$/) {
|
||||
# for debugging, you type the keysym in manually.
|
||||
$_ = "Keysym 1 0 999 $_ None";
|
||||
}
|
||||
next unless /^Keysym/;
|
||||
|
||||
my ($j, $id, $down, $k, $keysym, $rest) = split(' ', $_);
|
||||
|
||||
$n = lookup($down, $k, $keysym);
|
||||
if ($n < 0 || $n > 255) {
|
||||
print STDERR "skip: '$keysym' -> $n\n" if $down && $debug;
|
||||
next;
|
||||
}
|
||||
|
||||
$n_p = pack("c", $n);
|
||||
$ret = syscall($linux_ioctl_syscall, $fd, $TIOCSTI, $n_p);
|
||||
|
||||
print STDERR "ctrl=$control $keysym/$k syscall(" .
|
||||
"$linux_ioctl_syscall, $fd, $TIOCSTI, $n) = $ret\n" if $debug;
|
||||
|
||||
}
|
||||
@ -0,0 +1,89 @@
|
||||
#!/bin/sh
|
||||
#
|
||||
# x11vnc_loop:
|
||||
#
|
||||
# Example startup script for connecting x11vnc to an X display
|
||||
# at system boot up and having it reconnect when the X server restarts.
|
||||
#
|
||||
# Run, in rc.local say, via, e.g.:
|
||||
#
|
||||
# /path/to/x11vnc_loop 1>> /var/tmp/x11vnc_loop.log 2>&1 &
|
||||
#
|
||||
# call with argument "once" or a number to limit the number of loops.
|
||||
#
|
||||
##########################################################################
|
||||
# The following needs to be customized:
|
||||
x11vnc_cmd=x11vnc # or use full path (or set PATH).
|
||||
pwfile=/path/to/vnc/passwd # always use a password
|
||||
display=:0 # display of interest
|
||||
restart_sleep=5 # pause between X server restarts.
|
||||
|
||||
# modify cmdline args if desired:
|
||||
x11vnc_args="-display $display -rfbauth $pwfile -forever -nap"
|
||||
|
||||
# you may need to customize the "grep", etc, below in get_xauthority_file()
|
||||
##########################################################################
|
||||
|
||||
if [ "X$1" != "X" ]; then
|
||||
max=$1
|
||||
shift
|
||||
fi
|
||||
|
||||
get_xauthority_file() {
|
||||
#
|
||||
# We need to find the MIT-COOKIE file... this not portable at all,
|
||||
# depends on OS, distro, desktop, phase of moon, etc...
|
||||
#
|
||||
# If the cookie file was fixed and you knew it, you could just
|
||||
# return it here e.g.:
|
||||
#
|
||||
## echo "/var/gdm/:0.Xauth"; return
|
||||
#
|
||||
# or, if you knew the directory, you could look for the youngest
|
||||
# file there and return it e.g.:
|
||||
#
|
||||
## echo `ls -t /var/lib/xdm/authdir/authfiles/* | head -1`; return
|
||||
|
||||
# this hack tries to grep it out of ps output...
|
||||
xauth=""
|
||||
for i in 1 2 3
|
||||
do
|
||||
# very linux specific, and you likely need to tweak..
|
||||
patt="X11R6.*/X.*-auth"
|
||||
xauth=`ps wwwaux | grep "$patt" \
|
||||
| egrep -v 'grep|Xprt' | head -1 \
|
||||
| sed -e 's/^.*-auth//' | awk '{print $1}'`
|
||||
|
||||
if [ "X$xauth" != "X" ]; then
|
||||
break
|
||||
fi
|
||||
sleep 2 # wait a bit in case X server is restarting slowly.
|
||||
done
|
||||
echo $xauth
|
||||
}
|
||||
|
||||
try=1
|
||||
while [ 1 ]
|
||||
do
|
||||
echo "`date` $0 try number: $try"; try=`expr $try + 1`
|
||||
|
||||
auth=`get_xauthority_file`
|
||||
if [ ! -r "$auth" ]; then
|
||||
echo "`date` bad auth file: \"$auth\""
|
||||
else
|
||||
cmd="$x11vnc_cmd $x11vnc_args"
|
||||
sleep 1
|
||||
echo "`date` running: $cmd -auth $auth"
|
||||
# run x11vnc:
|
||||
$cmd -auth $auth
|
||||
if [ "X$max" = "Xonce" ]; then
|
||||
exit $?
|
||||
fi
|
||||
fi
|
||||
if echo "$max" | grep '[0-9]' > /dev/null; then
|
||||
if [ $try -gt $max ]; then
|
||||
exit
|
||||
fi
|
||||
fi
|
||||
sleep $restart_sleep
|
||||
done
|
||||
File diff suppressed because it is too large
Load Diff
Loading…
Reference in new issue